Why does Roosevelt pause and slow the pace of his speech when presenting the date, “December 7, 1941”?

A) to connect with his audience emotionally by appearing to become distraught in the opening lines of the speech

B) to ensure that his audience has time to write down or otherwise note this important date

C) to emphasize the importance of this date and the terrible tragedy that has befallen the country

D) to give his audience time to react and to set the tone for the rest of the speech